Hedman Hedders
Hedman Hedders Headers, Exhaust Manifolds, Exhaust Systems and Mufflers
Hedman Hedders, began as a one man shop in 1954. Bob Hedman, founder of Hedman Hedders, sold his highly sought-after exhaust tubes to fellow racers on the salt flats of the Mojave Desert. But, what started out as a way to make a few bucks to pay for Bob’s racing hobby, quickly turned into the premier header manufacturer for both the racing and street header marketplaces. Originally designed for straightline drag racers, word spread quickly about Hedman’s reputation for building headers that gave you the best boost in power for your dollar. It wasn’t long before Hedman Hedders was the brand of choice among racing’s elite engine builders, racers and race series. Familiar names like Don Garlits, Warren Johnson, Shirley Muldowney, Bob Chandler and his BIG FOOT Race Team, and the IROC series.
Hedman Hedders constantly reshapes itself to meet environmental requirements and incorporates computer technology to ensure that its products offer the best performance improvement. The current Hedman Hedders product offering includes Headers, Mufflers, Exhaust Systems, 304 Stainless Headers, C10 Headers, Camaro Headers, Chevelle Headers, El Camino Headers, Mustang Headers, Street Rod Headers, TURBO Headers, Jeep Headers, LS SWAP Headers, LS Swap Cast Manifolds, LS Swap Turbo Headers, Glass Pack Mufflers, Race Mufflers, Turbo Header Mufflers, Turbo Mufflers, Exhaust Cut-Outs, Exhaust Tips, Y-Pipes, X-Pipes, Mid-Pipes, Air Conditioning Brackets, Alternator Brackets, and Power Steering Brackets. Whether you’re a Pro or sportsman racer, Hedman Hedders builds your header with one goal in mind, optimum performance. Even if you’re not a racer, the lessons Hedman learns at the track and on the dyno, make it into every Hedman street header. Accesspeed is proud to offer Hedman Hedders products to our customers. With our lowest price match guarantee, you will always find the best combination of price and selection at Accesspeed.
Exhaust, Mufflers, Headers and Tips » Down-pipes
Down-Pipes
What is a down-pipe?
A down-pipe is an exhaust tube that directs the exhaust gases from your vehicle's turbo “down” into your exhaust system. The downpipe typically bolts onto the exhaust side of your turbo housing, and connects at your mid-pipe section. Some down-pipe exhaust brands include catalytic converters and others are simply straight-though pipes that bypass and/or eliminate the catalytic converter.
Does a down-pipe make your exhaust louder?
Yes. Most aftermarket down pipes have a straight-through design that will reduce backpressure and increase exhaust efficient. This makes your exhaust louder with a more aggressive note.
Does a downpipe increase horsepower?
An aftermarket down-pipe on any turbocharged engine should increase horsepower. In most cases, the upgraded down pipe will allow the turbo to spool quicker and hold a higher boost level.
Does a downpipe increase fuel economy?
Like most upgrades that reduce backpressure and allow exhaust gasses to exit more efficiently, you can realize a fuel mileage gain. However, most Accesspeed customers are simply unable to keep their foot out of the throttle long enough to see the fuel economy improvement.
Are down-pipes legal or illegal in my state?
If a down pipe requires modification or removal of the OEM catalytic converter, it is likely not legal. If the down-pipe you want to order is not 50-state legal (CARB-approved) with a proper EO#, it is most likely illegal in your state. We recommend checking your state laws to verify prior to purchasing.